> -Original Message-
> From: Peter Maydell [mailto:peter.mayd...@linaro.org]
> Sent: Tuesday, February 06, 2018 5:49 PM
> To: Gonglei (Arei)
> Cc: Paolo Bonzini; QEMU Developers; Huangweidong (C)
> Subject: Re: [Qemu-devel] [PATCH] rtc: placing RTC memory region out
On 6 February 2018 at 08:24, Gonglei (Arei) wrote:
> So, taking BQL is necessary, and what we can do is trying our best to narrow
> down the process of locking ? For example, do the following wrapping:
>
> static void rtc_rasie_irq(RTCState *s)
> {
> qemu_mutex_lock_iothread();
> qemu_irq_
> -Original Message-
> From: Paolo Bonzini [mailto:pbonz...@redhat.com]
> Sent: Monday, February 05, 2018 10:04 PM
> To: Peter Maydell
> Cc: Gonglei (Arei); QEMU Developers; Huangweidong (C)
> Subject: Re: [Qemu-devel] [PATCH] rtc: placing RTC memory region outside BQL
On 04/02/2018 19:02, Peter Maydell wrote:
> On 1 February 2018 at 14:23, Paolo Bonzini wrote:
>> On 01/02/2018 08:47, Gonglei wrote:
>>> diff --git a/hw/timer/mc146818rtc.c b/hw/timer/mc146818rtc.c
>>> index 35a05a6..d9d99c5 100644
>>> --- a/hw/timer/mc146818rtc.c
>>> +++ b/hw/timer/mc146818rtc.c
On 1 February 2018 at 14:23, Paolo Bonzini wrote:
> On 01/02/2018 08:47, Gonglei wrote:
>> diff --git a/hw/timer/mc146818rtc.c b/hw/timer/mc146818rtc.c
>> index 35a05a6..d9d99c5 100644
>> --- a/hw/timer/mc146818rtc.c
>> +++ b/hw/timer/mc146818rtc.c
>> @@ -986,6 +986,7 @@ static void rtc_realizefn(
> -Original Message-
> From: Paolo Bonzini [mailto:pbonz...@redhat.com]
> Sent: Thursday, February 01, 2018 10:24 PM
> To: Gonglei (Arei); qemu-devel@nongnu.org
> Cc: Huangweidong (C)
> Subject: Re: [PATCH] rtc: placing RTC memory region outside BQL
>
> On 01/02/2018 08:47, Gonglei wrote:
On 01/02/2018 08:47, Gonglei wrote:
> As windows guest use rtc as the clock source device,
> and access rtc frequently. Let's move the rtc memory
> region outside BQL to decrease overhead for windows guests.
>
> strace -tt -p $1 -c -o result_$1.log &
> sleep $2
> pid=$(pidof strace)
> kill $pid
>
